B Fischler et al. JPGN 2016; 63: 288-94. This position paper by ESPGHAN suggests testing children with increased transaminases for hepatitis E virus (HEV) and notes that immunocompromised children with HEV may require treatment (with ribavirin or lowering immunosuppression). Best tests: serology for IgM and IgG and HEV RNA PCR.
F Huang et al Hepatology 2016; 64: 350-59. This study from China showed frequent Hepatitis E excreted in milk from infected cows and that this milk is capable of transmit infection when given to rhesus macaques, even if pasteurized. Also, the article notes that seroprevalence of HEV in recent years has been higher than prior estimates (21% from 1988-94 and 6% from 2009-2010).